playing 41-45 campaing..the question is about the soviet troops that are stationed in Caucaus mountains in the line Batumi-Tbilisi, thouse soviet troops are all in reserve..¿Do i have to do something to reactivate them? or this troops are permanently in reserve and they cant not move for the whole campaing

It has nothing to do with Front activations. You will get Transcaucasus Front HQ, 44th Army HQ, a few divisions, and some air groups unfrozen before the first blizzard. The units are frozen and unfreeze after a certain number of turns. If you hold the cursor over the unit it will indicate when it unfreezes (Fzn 7 = frozen for 7 more turns). Most will unfreeze sometime in January 1942 IIRC. There will still be some units remaining in the mountains that will never unfreeze, unless Axis units make it that far.

It has nothing to do with Front activations. You will get Transcaucasus Front HQ, 44th Army HQ, a few divisions, and some air groups unfrozen before the first blizzard. The units are frozen and unfreeze after a certain number of turns. If you hold the cursor over the unit it will indicate when it unfreezes (Fzn 7 = frozen for 7 more turns). Most will unfreeze sometime in January 1942 IIRC. There will still be some units remaining in the mountains that will never unfreeze, unless Axis units make it that far.